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PA2AGA > HDDIG 05.12.99 08:36l 222 Lines 6193 Bytes #-9661 (0) @ EU
BID : HD_99_303C
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Subj: HamDigitalDigest 99/303C
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From: pa2aga
To: hd_broadcast@pa2aga
Subject: HamDigitalDigest 99/303C
X-BBS-Msg-Type: B
> >
> > Rob
> >
> > "Rob Janssen" <nomail@pe1chl.demon.nl> wrote in message
> > news:slrn83i5nb.a4g.nomail@linux.pe1chl.ampr.org...
> > > Rob <NoEmail@NoWay.com> wrote:
> > > >With Linux, do you only need a soundcard?? (Or do you also need some
> > other
> > > >hardware??)
> > >
> > > For modes that require automatic keying of the transmitter (e.g.
packet
> > > radio), you also need to construct a trivial interface to control the
> > > transmitter PTT line from the PC.
> > > This is not required when you only want to decode.
> > >
> > > Rob
> > > --
> > >
> >
>
+----------------------------------+--------------------------------------+
> > > | Rob Janssen pe1chl@amsat.org | WWWhome:
> http://www.pe1chl.demon.nl/
> > |
> > > | AMPRnet: rob@pe1chl.ampr.org | AX.25 BBS:
> PE1CHL@PI8WNO.#UTR.NLD.EU
> > |
> > >
> >
>
+----------------------------------+--------------------------------------+
> >
> >
>
>
>.
------------------------------
Date: Thu, 25 Nov 1999 17:38:59 -0600
From: Seth Miller <seth.miller@worldnet.att.net>
Subject: FS: KAM Plus HF/VHF TNC
For sale, KAM Plus dual-port TNC HF/VHF
Supports all modes: Packet, RTTY, Pactor, Amtor, CW, Navtex, plus
full-featured bult-in mailbox. Software version 8.0P.
Excellent condition, in original box with all manuals.
$175 shipped CONUS.
Please reply directly to the address below, as I do not check the newsgroup
regularly.
Thanks & 73,
- Seth N6BMB
seth.miller@worldnet.att.net
>.
------------------------------
Date: Mon, 22 Nov 1999 10:44:32 -0500
From: Gary Coffman <ke4zv@bellsouth.net>
Subject: German packet radio
On 11 Nov 1999 08:53:36 -0500, esj@harvee.billerica.ma.us (Eric S. Johansson)
wrote:
>Another way of asking the question is if the band pass filter is
>larger than the possible drift of the signal, would you still have the
>same problems with high bit error rate?
Sure. A bandpass wider than the signal lets in excess noise, so your
SNR is sharply degraded, and your BER goes through the roof. For
best performance, you want a matched filter response. But good
frequency stability isn't that hard to achieve, so this isn't a major
issue.
Note that with SS there is also a stability issue, in that case in the
time domain, which places constraints as severe as those for
frequency stability do on NB transmissions. It is really the same
problem since frequency and time are reciprocal. The problem is
tractable in either case. High precision references are readily
available. (GPS disciplined oscillators are a common way to get
the required stability for even multi-megabit links.)
Gary
Gary Coffman KE4ZV | You make it |mail to ke4zv@bellsouth.net
534 Shannon Way | We break it |
Lawrenceville, GA | Guaranteed |
>.
------------------------------
Date: Fri, 26 Nov 1999 02:02:56 +0100
From: "B.B." <omegamar@ri.tel.hr>
Subject: GSM 900 cellular
Is there a way to get around the problem of listening to
GSM telefones such asGSM 900 cellular?
Does anybody know how to make it possible in a cheap
way to listening to the GSM-traffic?
>.
------------------------------
Date: Mon, 22 Nov 1999 17:06:32 -0500
From: "Rob" <NoEmail@NoWay.com>
Subject: How do I start????
Oh yes.. One more thing. If you use PACTOR for your EMAIL etc, then I would
recommend you use AIRMAIL program with your PACTOR TNC (e.g. KAM PLUS, SCS
PTC II etc). AIRMAIL is designed to work with WINLINK/NETLINK system.
AIRMAIL is free. go to http://www.winlink.org/k4cjx/ and hit download etc
Rob
"Dale Gillilan" <positivechanges.hypnosis@gte.net> wrote in message
news:381E2BE3.BD854AC7@gte.net...
> I'm new to packet. Actually, I haven't started it yet. There seem to
> be so many options I don't know where to begin.
>
> Here is what I am wanting to do. I will be cruising on a sailboat and
> want to send/receive email. Access to an internet gateway would be nice
> so I could stay in contact with my non-ham family and friends. Of
> course, HF is a requirement.
>
> That's my need. Of course, I'm open to other fun possibilities....
>
> So, what equipment do I need? What speeds are appropriate and what
> modes?
>
> Any advice would be appreciated. And, answers get a bonus....
>
> Thanks,
> Dale
> WA7XH/M7
>
>.
------------------------------
Date: Thu, 25 Nov 1999 10:38:58 -0600
From: "Steve Sampson" <ssampson@usa-site.net>
Subject: Kantronics KNET
Charles Brabham wrote
>> Has anyone tried Kantronics KNET software?? It is supposed to be
>> compatible with NETROM.
>
>There is and has always been a lot of "K-NODES" in my area. They appear to
>be NetRom compatable, though there are some differences in how they are
>used.
K-NET is an option purchase, and the chip contains both K-NODE and K-NET.
K-NODE was the older non-network interface.
The advantage of a K-NET is that a simple little (battery powered even) box
and
an old radio can be used as a node out on the prairie. The KPC-9612 can do
the 9600 to 1200 backbone networking for these low baud rates. N0ELS and
KB5KWV have two of these at 400 ft or so, and can bring in the Oklahoma
panhandle users. There is no internet in the panhandle, so they appreciate
the
link. Couldn't do it with Flexnet or some other computer based system, as
they
wouldn't give you that much space on a commercial radio hut.
Until Charles get's 400 ft towers built for Oklahoma Hams, I guess they will
have
to use the Kantronics solution out on the prairie.
Steve
>.
------------------------------
Date: Thu, 25 Nov 1999 09:30:55 -0600
From: "Charles Brabham" <n5pvl@texoma.net>
Subject: Kantronics KNET
Rob <NoEmail@NoWay.com> wrote in message
news:KWb%3.193456$5r2.447909@tor-nn1.netcom.ca...
> Do the MFJ TNC clones come with 6Pack firmware for compatibility with
To be continued in digest: hd_99_303D
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